Troubleshooting With Led; Indoor Unit; Outdoor Unit - Daikin FTK(X)M-P Series Service Manual

Troubleshooting with LED

2. Troubleshooting with LED

2.1

Indoor Unit

Operation Lamp The operation lamp blinks when any of the following errors is detected.
1. When a protection device of the indoor or outdoor unit is activated, or when the thermistor
2. When a signal transmission error occurs between the indoor and outdoor units.
In either case, conduct the diagnostic procedure described in the following pages.
Service Monitor The indoor unit has a green LED (LED A) on the control PCB. When the microcomputer works
in order, the LED A blinks. (Refer to page 9 for the location of LED A.)
2.2

Outdoor Unit

The outdoor unit has a green LED (LED A) on the PCB. When the microcomputer works in
order, the LED A blinks. However, the LED A turns OFF while the standby electricity saving
function is activated and the power supply is OFF.
(Refer to page 11 for the location of LED A.)
49
malfunctions.
Operation lamp
(green)
(R21433)
Service Diagnosis
SiMT041509E